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annotate rogue3/potions.c @ 75:19903deed392

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arogue5: fix the crash when checking prices in shops. A buffer called curpurch, which stores a description of an item in a trading post which the player might be interested in, was only 15 bytes. It was overflowing into oldrp, a room pointer, leading to segfaults. The size of curpurch has been increased to LINELEN*2, which matches the size of prbuf, which is returned by inv_name and then strcpy()'d to curpurch. As long as nothing overflows prbuf it should be safe now. NOTE that this breaks savefile compatibility.
author John "Elwin" Edwards <elwin@sdf.org>
date Wed, 05 Sep 2012 10:14:34 -0700
parents 527e2150eaf0
children e7862a021609
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1 /*
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2 * @(#)potions.c 3.1 3.1 5/7/81
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3 * Function(s) for dealing with potions
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4 *
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5 * Rogue: Exploring the Dungeons of Doom
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6 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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7 * All rights reserved.
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8 *
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9 * See the file LICENSE.TXT for full copyright and licensing information.
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10 */
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11
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12 #include "curses.h"
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13 #include <stdlib.h>
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14 #include <string.h>
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15 #include "rogue.h"
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16
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17 void
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18 quaff()
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19 {
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20 struct object *obj;
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21 struct linked_list *item, *titem;
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22 struct thing *th;
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23 char buf[80];
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24
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25 item = get_item("quaff", POTION);
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26 /*
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27 * Make certain that it is somethings that we want to drink
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28 */
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29 if (item == NULL)
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30 return;
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31 obj = (struct object *) ldata(item);
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32 if (obj->o_type != POTION)
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33 {
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34 if (!terse)
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35 msg("Yuk! Why would you want to drink that?");
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36 else
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37 msg("That's undrinkable");
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38 return;
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39 }
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40 if (obj == cur_weapon)
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41 cur_weapon = NULL;
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42
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43 /*
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44 * Calculate the effect it has on the poor guy.
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45 */
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46 switch(obj->o_which)
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47 {
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48 case P_CONFUSE:
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49 if (off(player, ISHUH))
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50 msg("Wait, what's going on here. Huh? What? Who?");
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51
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52 if (on(player, ISHUH))
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53 lengthen(unconfuse, rnd(8)+HUHDURATION);
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54 else
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55 fuse(unconfuse, 0, rnd(8)+HUHDURATION, AFTER);
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56
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57 player.t_flags |= ISHUH;
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58 p_know[P_CONFUSE] = TRUE;
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59 when P_POISON:
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60 if (!ISWEARING(R_SUSTSTR))
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61 {
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62 chg_str(-(rnd(3)+1));
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63 msg("You feel very sick now.");
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64 }
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65 else
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66 msg("You feel momentarily sick");
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67 p_know[P_POISON] = TRUE;
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68 when P_HEALING:
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69 if ((pstats.s_hpt += roll(pstats.s_lvl, 4)) > max_hp)
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70 pstats.s_hpt = ++max_hp;
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71 msg("You begin to feel better.");
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72 sight();
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73 p_know[P_HEALING] = TRUE;
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74 when P_STRENGTH:
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75 msg("You feel stronger, now. What bulging muscles!");
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76 chg_str(1);
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77 p_know[P_STRENGTH] = TRUE;
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78 when P_MFIND:
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79 /*
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80 * Potion of monster detection, if there are monters, detect them
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81 */
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82 if (mlist != NULL)
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83 {
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84 wclear(hw);
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85 overwrite(mw, hw);
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86 show_win(hw,
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87 "You begin to sense the presence of monsters.--More--");
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88 p_know[P_MFIND] = TRUE;
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89 }
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90 else
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91 msg("You have a strange feeling for a moment, then it passes.");
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92 when P_TFIND:
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93 /*
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94 * Potion of magic detection. Show the potions and scrolls
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95 */
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96 if (lvl_obj != NULL)
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97 {
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98 struct linked_list *mobj;
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99 struct object *tp;
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100 int show;
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101
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102 show = FALSE;
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103 wclear(hw);
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104 for (mobj = lvl_obj; mobj != NULL; mobj = next(mobj))
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